Opportunistic beamforming with precoding for spatially correlated channels

Tareq Al-Naffouri, Mohamed E. El-Tayeb

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Random beamforming (RBF) exploits multiuser diversity to increase the sum-rate capacity of MIMO broadcast channels. However, in the presence of spatial correlation between the downlink channels, multiuser diversity can not be exploited and the sum-rate suffers a signal to noise (SNR) hit. In this paper, we explore precoding techniques that minimize this hit. Basically, we derive an optimum and an approximate precoding matrix that minimizes the sum-rate hit of RBF. As a by product, we introduce a technique that evaluates the cumulative distribution function (CDF) of weighted norms of Gaussian random variables.

Original languageEnglish (US)
Title of host publication2009 11th Canadian Workshop on Information Theory, CWIT 2009
Pages63-66
Number of pages4
DOIs
StatePublished - Oct 19 2009
Event2009 11th Canadian Workshop on Information Theory, CWIT 2009 - Ottawa, ON, Canada
Duration: May 13 2009May 15 2009

Publication series

Name2009 11th Canadian Workshop on Information Theory, CWIT 2009

Other

Other2009 11th Canadian Workshop on Information Theory, CWIT 2009
CountryCanada
CityOttawa, ON
Period05/13/0905/15/09

ASJC Scopus subject areas

  • Computer Science Applications
  • Information Systems

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